Title :
Image processing techniques for measuring wavefront distortion of a laser beam
Author :
Seung-Kyu Park ; Sung-Hoon Baik ; Byung Heon Cha ; Kim, CheoLJung ; Ra, Sung Wmng
Author_Institution :
Lab. for Quantum Opt., Korea Atomic Energy Res. Inst., Daejeon, South Korea
Abstract :
In this paper, we studied image processing techniques for the fast measurement of wavefront with high measuring resolution. We investigated the relation between the measurement resolution and the measurement speed by using several measuring techniques of wavefront. And then, we decided on optimum conditions of signal processors for a wavefront measuring device using a Shack-Hartmann sensor and proposed an estimated weighting factor to rapidly calculate wavefront with a high measuring resolution. We designed an adaptive optics system using a Shack-Hartmann sensor to measure and correct wavefront distortions of a laser beam. We tested several wavefront measuring techniques including our proposed algorithm. From the experimental results, the proposed signal processing techniques provided fast measurement results with high measuring resolution.
Keywords :
adaptive optics; image processing; laser beams; laser variables measurement; optical distortion; optical variables measurement; wavefront sensors; Shack-Hartmann sensor; adaptive optics system; fast measurement; fast measurement results; high measuring resolution; image processing techniques; laser beam; measurement resolution; measurement speed; signal processing techniques; signal processors; wavefront distortion measurement; wavefront distortions; Distortion measurement; Image processing; Image resolution; Laser beams; Laser noise; Optical design; Signal processing; Signal processing algorithms; Signal resolution; Velocity measurement;
Conference_Titel :
Lasers and Electro-Optics, 2003. CLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on
Print_ISBN :
0-7803-7766-4
DOI :
10.1109/CLEOPR.2003.1277130
